SAN issuse in LInux

[M.Thomas]

Hi Admins,

I have allocated few SAN disks to a linux server. Suddenly, altogether all of the mounted SAN disks in the linux server didn't mount when I rebooted the Server. When I manually tried to mount..I am getting "Device does not exist" error.

But, when I tried fdisk -l command it clearly shows the disks as /dev/sda, /dev/sdb, /dev/sdc..

when i tried, fdisk /dev/sda...am not able to view the partition information. Data are present in the disk. We don't have any backup of that data..we need to somehow retrieve the exisiting data in those disks....

Thanks in advance.

[Rob Leadbeater]

Hi,

If you have a look at the output of dmesg you should hopefully see what's happening with the devices as the server comes up.

That might give you some clues as to what's wrong.

You might also want to let the forum know exactly how things are set up - version of Linux, type of SAN, HBAs, multipathing software etc.

Cheers,

Rob